U.S. doctors online nowAsk doctors free
A 32-year-old member asked:

Can a yolk sac be mistaken for a twin pregnancy in 8 week ultrasound?

1 doctor answer2 doctors weighed in
Dr. Bruce J. Stringer
Radiology 48 years experience
Hope Not!: By 8 weeks, it should be fairly easy to see 2 fetuses with their own hearts. This is a good time to define number of gestational sacs and placental disposition. Exactly what are the credentials of the person doing the sono? That is very important.
Last updated Feb 11, 2016

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.